20440022240 has 48 divisors (see below), whose sum is σ = 52679516400. Its totient is φ = 7432734720.

The previous prime is 20440022177. The next prime is 20440022303. The reversal of 20440022240 is 4222004402.

It is an interprime number because it is at equal distance from previous prime (20440022177) and next prime (20440022303).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5805065 + ... + 5808584.

It is an arithmetic number, because the mean of its divisors is an integer number (1097489925).

Almost surely, 2^20440022240 is an apocalyptic number.

20440022240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440022240 is an abundant number, since it is smaller than the sum of its proper divisors (32239494160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20440022240 is a wasteful number, since it uses less digits than its factorization.

20440022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11613675 (or 11613667 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20440022240 its reverse (4222004402), we get a palindrome (24662026642).

The spelling of 20440022240 in words is "twenty billion, four hundred forty million, twenty-two thousand, two hundred forty".